APKPure Appを使用する
Mp3 Media Converterの旧いバージョンをダウンロードすることが可能
Media converter allows you to convert your media (videos of flv, 3gp, mp4 and more...) files to mp4 or mp3;
Advanced options supports setting start and end positions, allows you to extract short audio from a movie to create your ring tone.
Notes:
This app uses LGPL ffmpeg and mp3lame libraries as underlying codecs.